General description The AlwaysH Pack Foam Pool Filters for Intex Type S1 includes four reusable and washable filter sponges designed to maintain cleanliness in your spa, swimming pool, or aquarium. Made from high-quality polyester fiber, these filters are strong, durable, and an ideal alternative to disposable paper filters, helping to reduce costs and waste. Technical specifications Model: Intex S1 Dimensions: 108 x 73 mm (L x W) Compatibility and accessories Compatible with Intex filter pumps 28604 and 29000 Suitable for most pool filters on the market Usage Place the sponge cover directly over the filter's water inlet Recommended to change every two weeks for optimal filtration